It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

Part4 ( Replacing JBE ECU ) ( if you have 2007/09 > skip this part )
You can find JBE ECU under the feet of the passenger seat.
First you must replace it on JBE2 or JBE3 ECU (61359286790 ).
After this you must integrate D-can bus line on new ECU. ( Old cars have K-line and new ECU will not work )
Change pin on OBD2 socket
7 to 14
and put the additional wire between OBD2 socket pin 6 and JBE ( blue connector ) pin 17 Attachment 33907

Part4 ( Replacing MSD80 on MSD 81 ) ( if you have 2007/09 > skip this part )
Replace you MSD80 on 81. Very important! you cann't use used MSD81 unit. you should buy it new
Program it on Zub 7628524
Do not forget to transfer the value of the injectors in the new MSD81.

Part6 Programming and Coding
I use NCS Expert and Win KFP to program and code my car
Remove FA $205
Remove value that starts # and Add #0909
Add FA $2TC
Make FA write on CAS and NFRM
Code ECU: MSD81/CAS/Kombi/IHK/JBFE/NFRM/GWS
Program MSD81 on Zub 7628524
Program GS40 on Zub 7600042
Update you Kombi/NFRM/GWS

just had a read through this

does this mean if you swap to MSD81 at all you need the new JBE/DSC parts as it communicates on D-line not k-line? That would actually make a fair bit of sense, damn

if so.. wow glad i found this thread now so i can start collecting haha

You can swap MSD80 > MSD81 without anything, just install it, coding and program.

hmm that just confuses me then.. it made sense to have to swap it all haha

so you only need to swap the JBE/DSC pump/module when changing to DCT?.. i kinda understand the DCT needing a new JBE, but why would it need a new DSC pump/module?

doesn't the MSD81 communicate on D-CAN or is it on it's own BUS that's the same as MSD80?.. or does the JBE do all the work of converting it either way, and it doesn't really matter? Technically my swap is MSV70 to MSD81 (N52 to N54) from an 06/2006 model, which has the JBE1/same modules as the MSD80 335i's iirc. (and considering the P3 vent gauge has issues working on these cars... makes me even more concerned).. I have no idea where to find any of this stuff out besides trial-and-error.. the documents i had links to are dead and the TIS isn't helping much either lol.

i don't want to get my engine in and it not start/display anything on the dash.. or light up like a tree at least, is all haha... especially considering can get all the needed parts for $500 or so from ebay.

If it's not needed, then like i thought in the first place.. that's good i guess